			var t = null;
			time();
			t = setTimeout(time, 1000); //開始运行
			function time() {
				clearTimeout(t);//清除定时器
				dt = new Date();
				var y = dt.getFullYear();
				var mt = dt.getMonth() + 1;
				var day = dt.getDate();
				var h = dt.getHours(); //获取时
				h = h < 10 ? "0" + h : h;
				var m = dt.getMinutes(); //获取分
				m = m < 10 ? "0" + m : m;
				var s = dt.getSeconds(); //获取秒
				s = s< 10 ? "0" + s : s;
				document.querySelector(".showTime").innerHTML = '当前时间：' + y + "年" + mt + "月" + day + '日' + "-" + h + "时" + m + "分" +
					s + "秒";
				t = setTimeout(time, 1000); //设定定时器，循环运行     
			}
